JPS5659560A - Production of resin coated sand - Google Patents
Production of resin coated sandInfo
- Publication number
- JPS5659560A JPS5659560A JP13357379A JP13357379A JPS5659560A JP S5659560 A JPS5659560 A JP S5659560A JP 13357379 A JP13357379 A JP 13357379A JP 13357379 A JP13357379 A JP 13357379A JP S5659560 A JPS5659560 A JP S5659560A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- sand
- crosslinking agent
- unsaturated polyester
- uncured
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To produce the resin coated sand of superior collapsing property after pouring without producing any malodor at the firing of a molded mold by coating the surfaces of molding sand by means of specific uncured unsaturated polyester resin and adding a silane coupling agent, a polymerizing catalyst and a crosslinking agent separately at the kneading.
CONSTITUTION: An uncured unsaturated polyester resin such as crystalline unsaturated polyester which is solid at an ordinary temp., has no tack, is ≥60°C in softening point and ≤500 poise in viscosity and molding sand having been heated to 170°C are kneaded in a mixer. Here, it is wall to beforehand add a small amount of a liquid crosslinking agent. In this way, the unsaturated polyseter resin is coated on the surfaces of the sand by a hot melt method. After the coating or during kneading, 5W50parts mixture containing 0.1W5parts sliane coupling agent, 0.1W5 parts polymerizing catalyst benzoylperoxide and a liquid crosslinking agent such as chrolomethylene-di-allyl phthalate plus the portion have beforehand been charged, is added to 100 parts uncured resin. The molding sand which does not produce any malodor at mold firing, and is superior in collapsing property at the knock-out is obtained.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54133573A JPS5927671B2 (en) | 1979-10-18 | 1979-10-18 | Manufacturing method for resin-coated sand |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54133573A JPS5927671B2 (en) | 1979-10-18 | 1979-10-18 | Manufacturing method for resin-coated sand |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5659560A true JPS5659560A (en) | 1981-05-23 |
JPS5927671B2 JPS5927671B2 (en) | 1984-07-07 |
Family
ID=15107961
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54133573A Expired JPS5927671B2 (en) | 1979-10-18 | 1979-10-18 | Manufacturing method for resin-coated sand |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5927671B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61123656A (en) * | 1984-11-19 | 1986-06-11 | Kanegafuchi Chem Ind Co Ltd | Polyester-modified vinyl resin |
EP0219645A2 (en) * | 1985-08-22 | 1987-04-29 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Molding material and mold |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50104721A (en) * | 1974-01-25 | 1975-08-19 |
-
1979
- 1979-10-18 JP JP54133573A patent/JPS5927671B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50104721A (en) * | 1974-01-25 | 1975-08-19 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61123656A (en) * | 1984-11-19 | 1986-06-11 | Kanegafuchi Chem Ind Co Ltd | Polyester-modified vinyl resin |
JPH0623330B2 (en) * | 1984-11-19 | 1994-03-30 | 鐘淵化学工業株式会社 | Paint |
EP0219645A2 (en) * | 1985-08-22 | 1987-04-29 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Molding material and mold |
Also Published As
Publication number | Publication date |
---|---|
JPS5927671B2 (en) | 1984-07-07 |
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